I don't know if somebody already found this, but may be relevant to wine-devel comunity (google don't found nothing about in this list): http://www.jbox.dk/sanos/
And the code (I haven't really looked much there): http://www.jbox.dk/sanos/source/index.html
The code is released under an "BSD style" license.
The win32 exception handling implementation is based on Wine code: http://www.jbox.dk/sanos/contributions.htm
[]s Augusto Arcoverde da Rocha